[opaque pointer type] Provide a convenience for IRBuilder::CreateCall that accepts a Function without needing to take an explicit callee Type

The common case is a direct call, so don't make all those users have to
explicitly pass the result of llvm::Function::getFunctionType.

llvm-svn: 237627

llvm/include/llvm/IR/IRBuilder.h

@@ -21,6 +21,7 @@
 #include "llvm/IR/BasicBlock.h"
 #include "llvm/IR/ConstantFolder.h"
 #include "llvm/IR/DataLayout.h"
+#include "llvm/IR/Function.h"
 #include "llvm/IR/GlobalVariable.h"
 #include "llvm/IR/Instructions.h"
 #include "llvm/IR/LLVMContext.h"
@@ -1466,6 +1467,12 @@ public:
     return Insert(CallInst::Create(Callee, Args), Name);
   }
 
+  CallInst *CreateCall(Function *Callee, ArrayRef<Value *> Args,
+                       const Twine &Name = "") {
+    return Insert(CallInst::Create(Callee->getFunctionType(), Callee, Args),
+                  Name);
+  }
+
   Value *CreateSelect(Value *C, Value *True, Value *False,
                       const Twine &Name = "") {
     if (Constant *CC = dyn_cast<Constant>(C))